Minkman

They are the rimmed cartridges for the double rifle. A 465 H&H double cartridge is about like the 470 Nitro.

The new 465 H&H is a belted rimless case for bolt actions. It is basically the 460 Wby case but with the sort of taper and shoulder you see on a 300 H&H.

The new 400 H&H is based on the 375 H&H and has a shape very similar to the 404 Jeffery. That is, virtually no body taper but a long sloping shoulder and long neck.

If you do a search on this site I think John Ricks posted pictures of the 400 H&H.

Mike